Practice question

Technician A says a charge air cooler (CAC) leak reduces boost pressure and lowers power. Technician B says oil residue in the charge air cooler can come from a worn turbocharger seal or high crankcase pressure. Who is correct?

  1. Technician A only
  2. Technician B only
  3. Both A and B
  4. Neither A nor B

Answer: C — Both A and B

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